Re: Band2 Study v.2

[HHP <hhp@xxxxxxxx>]

I found a problem with the %Bands formulas posted yesterday.  No matter
what optional parameters are entered for EMA length or % bandwidth, the
Expert appears to read only the default values.  As a result, when using
other than default parameters, the coloured dots appear in inappropriate
places.  If the coloured dots are considered unnecessary the Expert can
simply be detached.

Alternatively, below is a hard-coded version.  There is no screen to
enter optional parameters.  Instead, plot the %Bands formula,then
right-click on one of the bands, select '%Bands Properties', then the
'Formula' tab, and change the parameters in the first two lines of the
%Bands formula; click 'OK'.  Or make the change in the Formula Editor. 
The values need to be entered only once, in the %Bands formula; the
%BandsCount formula and the Expert will take their values from that. 
For regular use, get the display to your liking, then create a template.

{NAME: %Bands}

Pds:= 21;   {ENTER EMA LENGTH}

Pct:= 2.5;  {ENTER PERCENT BANDWIDTH}

MA:= Mov(C,Pds,E);
TBnd:= MA*(1+Pct/100);
LBnd:= MA*(1-Pct/100);
MA; TBnd; LBnd;


{NAME:  %BandsCount}

{USE WITH %BANDS FORMULA}

TBnd:=  FmlVar("%Bands","TBND"); 
IUp:= (H > TBnd) * Ref((H <= TBnd),-1);
CntUp:= IUp + BarsSince(IUp=1) * (H > TBnd);

LBnd:=  FmlVar("%Bands","LBND"); 
IDn:= (L < LBnd) * Ref((L >= LBnd),-1);
CntDn:= IDn + BarsSince(IDn=1) * (L < LBnd);
CntUp; -CntDn;


EXPERT

{Name: %Bands}

Symbols tab.
{NAME: %BandUp}
FmlVar("%BandsCount","CNTUP") >= 1
Graphic tab: Dot, Small, Green, Above price plot

Symbols tab.
{NAME: %BandDn}
FmlVar("%BandsCount","CNTDN") >= 1
Graphic tab: Dot, Small, Magenta, Below price plot